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A004322 Binomial coefficient C(3n,n-4). 0
1, 15, 153, 1330, 10626, 80730, 593775, 4272048, 30260340, 211915132, 1471442973, 10150595910, 69668534468, 476260169700, 3245372870670, 22057981462440, 149608375854525, 1012974972473835, 6848956078664700 (list; graph; refs; listen; history; text; internal format)
OFFSET

4,2

REFERENCES

M. Abramowitz and I. A. Stegun, eds., Handbook of Mathematical Functions, National Bureau of Standards Applied Math. Series 55, 1964 (and various reprintings), p. 828.

LINKS

Table of n, a(n) for n=4..22.

Milan Janjic, Two Enumerative Functions

M. Abramowitz and I. A. Stegun, eds., Handbook of Mathematical Functions, National Bureau of Standards, Applied Math. Series 55, Tenth Printing, 1972 [alternative scanned copy].

CROSSREFS

Sequence in context: A206361 A041424 A021124 * A125403 A010035 A017389

Adjacent sequences:  A004319 A004320 A004321 * A004323 A004324 A004325

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified January 22 04:27 EST 2020. Contains 331133 sequences. (Running on oeis4.)